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Book Synopsis R025: Evaluation of geothermal activity in the Truckee Meadows, Washoe County, Nevada by : John W. Erwin
Download or read book R025: Evaluation of geothermal activity in the Truckee Meadows, Washoe County, Nevada written by John W. Erwin and published by NV Bureau of Mines & Geology. This book was released on with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Geothermal Activity in the Truckee Meadows, Washoe County, Nevada by : Richard L. Bateman
Download or read book Evaluation of Geothermal Activity in the Truckee Meadows, Washoe County, Nevada written by Richard L. Bateman and published by . This book was released on 1975 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Occurrences in Truckee Meadows, Washoe County, Nevada by : Robert Bruce Scheiback
Download or read book Geothermal Occurrences in Truckee Meadows, Washoe County, Nevada written by Robert Bruce Scheiback and published by . This book was released on 1975 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
We have conducted a detailed geologic study to better characterize a blind geothermal system in Emerson Pass on the Pyramid Lake Paiute Tribe Reservation, western Nevada. A thermal anomaly was discovered in Emerson Pass by use of 2 m temperature surveys deployed within a structurally favorable setting and proximal to surface features indicative of geothermal activity. The anomaly lies at the western edge of a broad left step at the northeast end of Pyramid Lake between the north- to north-northeast-striking, west-dipping, Fox and Lake Range normal faults. The 2-m temperature surveys have defined a N-S elongate thermal anomaly that has a maximum recorded temperature of ~60°C and resides on a north- to north-northeaststriking fault. Travertine mounds, chalcedonic silica veins, and silica cemented Pleistocene lacustrine gravels in Emerson Pass indicate a robust geothermal system active at the surface in the recent past. Structural complexity and spatial heterogeneities of the strain and stress field have developed in the step-over region, but kinematic data suggest a WNW-trending (~280° azimuth) extension direction. The geothermal system is likely hosted in Emerson Pass as a result of enhanced permeability generated by the intersection of two oppositely dipping, southward terminating north- to north-northwest-striking (Fox Range fault) and northnortheast- striking faults.
Book Synopsis Structural Controls of the Emerson Pass Geothermal System, Washoe County, Nevada by :
Download or read book Structural Controls of the Emerson Pass Geothermal System, Washoe County, Nevada written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have conducted a detailed geologic study to better characterize a blind geothermal system in Emerson Pass on the Pyramid Lake Paiute Tribe Reservation, western Nevada. A thermal anomaly was discovered in Emerson Pass by use of 2 m temperature surveys deployed within a structurally favorable setting and proximal to surface features indicative of geothermal activity. The anomaly lies at the western edge of a broad left step at the northeast end of Pyramid Lake between the north- to north-northeast-striking, west-dipping, Fox and Lake Range normal faults. The 2-m temperature surveys have defined a N-S elongate thermal anomaly that has a maximum recorded temperature of ~60°C and resides on a north- to north-northeaststriking fault. Travertine mounds, chalcedonic silica veins, and silica cemented Pleistocene lacustrine gravels in Emerson Pass indicate a robust geothermal system active at the surface in the recent past. Structural complexity and spatial heterogeneities of the strain and stress field have developed in the step-over region, but kinematic data suggest a WNW-trending (~280° azimuth) extension direction. The geothermal system is likely hosted in Emerson Pass as a result of enhanced permeability generated by the intersection of two oppositely dipping, southward terminating north- to north-northwest-striking (Fox Range fault) and northnortheast- striking faults.
Detailed geologic mapping, spring and two-meter temperature data, and gravity and magnetic data constrain the structural controls of the high-temperature (>175°C) geothermal system at Gerlach. The system lies along the termination of a major normal fault at the southern end of the Granite Range in the southern Black Rock Desert, a known favorable setting for geothermal activity. Mapping of Quaternary deposits documents Holocene movement on the north-northeast-striking, east-dipping Gerlach fault. Dominant orientations of geothermal veins in exposed fossil geothermal systems parallel this active, terminating range-front fault, suggesting that it does provide a major control on the current geothermal system. Locally, there are two areas of geothermal upwelling with separate sets of structural controls. The two areas are expressed by outflow as two sets of springs, Great Boiling Springs and Mud Springs, as well as by separate altered bedrock fossil systems above the springs. The areas are topographically distinct (neither could represent outflow from the other), are separated by relatively lower shallow temperature measurements, and are associated with different orientations of the gravity gradient. Prominent northwest-striking fractures provide areas of enhanced permeability and parallel the secondary set of veins in the altered bedrock uphill of Great Boiling Springs. These northwest-striking veins are not observed in the area above Mud Springs, but there is an east-northeast-striking set that is not present above Great Boiling Springs. The presence of east-northeast-striking structures is supported in the gravity data. These structures could represent an ever broader-scale structural connection between the southern termination of the Gerlach fault and the northern termination of the Fox Range fault to the south.
Book Synopsis Structural Controls of the Geothermal System at Gerlach, Washoe County, Nevada by : Lyndsay Alyss Hazelwood
Download or read book Structural Controls of the Geothermal System at Gerlach, Washoe County, Nevada written by Lyndsay Alyss Hazelwood and published by . This book was released on 2014 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed geologic mapping, spring and two-meter temperature data, and gravity and magnetic data constrain the structural controls of the high-temperature (>175°C) geothermal system at Gerlach. The system lies along the termination of a major normal fault at the southern end of the Granite Range in the southern Black Rock Desert, a known favorable setting for geothermal activity. Mapping of Quaternary deposits documents Holocene movement on the north-northeast-striking, east-dipping Gerlach fault. Dominant orientations of geothermal veins in exposed fossil geothermal systems parallel this active, terminating range-front fault, suggesting that it does provide a major control on the current geothermal system. Locally, there are two areas of geothermal upwelling with separate sets of structural controls. The two areas are expressed by outflow as two sets of springs, Great Boiling Springs and Mud Springs, as well as by separate altered bedrock fossil systems above the springs. The areas are topographically distinct (neither could represent outflow from the other), are separated by relatively lower shallow temperature measurements, and are associated with different orientations of the gravity gradient. Prominent northwest-striking fractures provide areas of enhanced permeability and parallel the secondary set of veins in the altered bedrock uphill of Great Boiling Springs. These northwest-striking veins are not observed in the area above Mud Springs, but there is an east-northeast-striking set that is not present above Great Boiling Springs. The presence of east-northeast-striking structures is supported in the gravity data. These structures could represent an ever broader-scale structural connection between the southern termination of the Gerlach fault and the northern termination of the Fox Range fault to the south.
